Primitive arthropods, Biology

Assignment Help:

Primitive Arthropods

The primitive arthropods, Onychophora (for example Peripatus) have a series of paired legs which are not jointed but have a ringed appearance because of the presence of rows of papillae on them. Each leg consists of two parts, a conical proximal part along with their extrinsic muscles, and a small distal part comprising a pair of claws.

183_Primitive Arthropods.png

Figure: Peripatus lateral view of head

The limbs are protracted and retracted. Using these legs, and through extension and contraction of the body for working the legs they crawl. While a segment is extended, the legs are lifted and moved forward; subsequent effective stroke provides the animals a pushing force.


Related Discussions:- Primitive arthropods

Role of nacl in metabolism, ROLE OF NaCl - It forms .9% of blood of ...

ROLE OF NaCl - It forms .9% of blood of mammal. It forms .7% of blood of frog. Bicarbonates of Na+ act as buffer for pH constancy. Involved in active transport of gluc

Spermatogenesis, Spermatogenesis: In the mature male functional sper...

Spermatogenesis: In the mature male functional sperm cells are produced within the seminiferous tubules of the testes. Around the periphery of the seminiferous tubules are l

What is inflammation, What is inflammation? Inflammation is the initial...

What is inflammation? Inflammation is the initial response of the unspecific defense system versus aggressions against the body (the aggressions might be caused by infectious p

Falling death rate, State the changes in society which could contribute to ...

State the changes in society which could contribute to a falling death rate. The changes in society which could contribute to a falling death rate are:  (i) improvements in

Whcih animals are triploblastic, Which one of the following kinds of animal...

Which one of the following kinds of animals are triploblastic? 1. Flat worms 2. Sponges 3. Ctenophores 4. Corals Flat worms

How are metarterioles different from arterioles, How are metarterioles diff...

How are metarterioles different from arterioles? Explain how fenestrated capillaries are different than continuous capillaries in terms of their structure and function.

Explain th eobjective of intensive care, Explain th eobjective of intensive...

Explain th eobjective of intensive care? After reading this unit, you should be able to: • know how to organize an intensive care unit; • practice effective cardio pulmonary

Small for gestational age & intrauterine growth retardation, Define Small f...

Define Small for Gestational Age and Intrauterine Growth Retardation? Small for Gestational Age (SGA) is defined as infants affected by intrauterine growth restriction (IUGR).

Define the intracellular cyclic amp, Define the intracellular cyclic AMP ...

Define the intracellular cyclic AMP Healthy Person P takes a drug that makes a strong effect on the epithelial cells of the kidney collecting duct within one hour and lasts fo

Control of aflatoxin, Q. Control of Aflatoxin? Control: Because aflatox...

Q. Control of Aflatoxin? Control: Because aflatoxins are potentially widespread in occurrence and have an insidious combination of acute and chronic toxicity, it is prudent to

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd